Canon opture S1 Instruction Manual page 70

About the audio level indicator:
When [MIC LEVEL] is set to [AUTO] and in the
level indicator switches on and off with each press of the AUDIO LEVEL button.
[MIC LEVEL] is set to
[MANUAL]
The audio level can be changed when the green bar is displayed. We
recommend hiding the bar when you have finished adjusting to prevent
accidental changes.
When recording in very loud surroundings, the sound may be distorted even
though the audio level indicator shows an appropriate level. In this case, set the
mode dial to a mode other than AUTO, and activate the microphone attenuator
by setting [MIC ATT] under the MENU options to ON. The microphone
attenuator can be used also when recording to the memory card.
Turning the audio level all the way down will prevent sound recording.
70
-dB40
M
mode: the audio
12 0
Guide (green bar)